Gas Prices Dropping, Could Hit as Low as $3 a Gallon, Experts Say

Gas prices may be dropping to $3 a gallon again, some experts believe, after prices fell 6.4 cents in the last two weeks.

The average price of a gallon of regular gas in the U.S. is down 31 cents from this time a year ago, the latest Lundberg survey from Sept. 20 shows. The industry poll included about 2,500 retail stations in the 48 contiguous states.

Other experts, however, say the dip is just the typical September decent.

"It’s normal for prices to fall in September," Mark Jenkins, American Automobile Association spokesman, told NBCNews.com. "The summer driving season is over, demand is down, and refineries are switching to the cheaper winter-blend gasoline. Prices could continue to fall another 5 to 10 cents before the end of the month, but it’s unlikely."